Cambodia is a country with a tropical monsoon climate, and that means there are two seasons, rainy season and dry season. So if you’re wondering about the weather at Angkor Wat, it will probably be raining at this ancient temple site on any given day from May through November, which is the monsoon season.
The dry months are November through April.
During the dry season, Angkor Wat weather tends to be not only warm, but downright hot. Expect highs between 80 and 90°F (27 and 32°C) on most days, and a lot of humidity.
Rainy, monsoon season days are cooler on average, but it never gets really cold in this region. The average daily temperature around Angkor Wat is about 77°F (25°C )during the day and around 70°F (21°C) at night.
Most people consider November through February the optimum weather months for visiting Angkor Wat.
During this time you can expect comfortably warm days, clear skies, no rain, a nice light breeze and the evenings comfortably cool for sleeping.